Suitable for multiple applications. Changes in output wiring and external links between wiring terminals allow you to configure the thermostat for the appropriate application. The applications that are available are: - Heating or Cooling only - Two pipes: Heat or Cool with Manual Changeover - Two pipes: Heat or Cool with Seasonal Changeover (requires optional pipe sensor) - Two pipes: Heat or Cool with Auxiliary Heat and Manual or Seasonal Changeover (requires optional pipe sensor) FEATURES: